What is the best way to get flawless armpits?

Back home in the Philippines I never had any problem when it comes to armpits because I have a natural remedy for sweaty and smelly armpits lol!. But since I got here in America ( I hate to admit it but I'm just being honest ) my armpit gets darker and sometimes when I sweats a lot it gets smelly too! ewww! gross....but I have no choice because I can't use anything like the deodorant. I even tried using the lime here because I couldn't find any calamansi ( Filipino Lime ) in the Asian stores but the lime here only worsen my allergy, it makes my underarm so itchy. TO my disappointment I decide to buy a deodorant and just didn't mind the rushes once I use it. Now I am suffering of a dry and ugly underarm because of my decision to just use deodorant cause I can't stand the sweats and smells ( though its not really a bad smells like those smells that you can't breath at all once you smell it lol ) when I go to work. When I talked to my beautiful friend Analyn, I learned that she is also experiencing of having itchy underarms that's why she always have her allergy relief every where she go. She also let me try the cream and it really works good. Now I don't have to suffer myself from scratching to much because of my allergy to deodorant. Ohh i just wish though that I can plant a calamansi tree here in Papa Kevin's backyard. So that I don't need to deal with the same problem again. For me using calamansi as your deodorant is the best way to get a flawless armpits.